ExoAtmospheres
IAC community database for exoplanet atmospheric observations
GJ 1132 b
| Planet status | Confirmed |
|---|---|
| Planet type | Warm Earth-size |
| Period | 1.628931 d |
| Mass | 0.0052 MJ 1.65256 M⊕ |
| Radius | 0.1035 RJ 1.1592 R⊕ |
| Semi major axis | 0.0154 AU |
| Star name | GJ 1132 |
| Star distance | 12.04 pc |
| Star teff | 3270 K |
| Star radius | 0.207 R☉ |
| Temperature (calculated) | 580 K |
| V | 13.5 mag |
| J | 9.245 mag |
| K | 8.322 mag |
| Alternate names | |
| Exoplanet Encyclopaedia |  |
Molecules
Featureless spectra: Detection
|
JWST-NIRSpec | Atmospheric Retrieval of Combined JWST, HST, and Ground-Based Observations Reveals a Featureless Transmission Spectrum for GJ 1132 b2026, Mohammad SenobarSareh Ataiee |
No evidence of molecular signals within 0.7-5.1um. Atmospheric models indistinguishable from the flat-line model |
Featureless spectra: Detection
|
JWST-NIRSpec | Additional JWST/NIRSpec Transits of the Rocky M Dwarf Exoplanet GJ 1132 b Reveal a Featureless Spectrum2025, Katherine A. Bennett, Ryan J. MacDonald et al. |
|
Featureless spectra: Detection
|
G-B: High resolution IR | Exploring the atmosphere of GJ 1132 b with CRIRES+2025, E. Palle, F. Yan et al. |
|
Dayside Temperature (occultation): 709 K |
JWST-MIRI | JWST Thermal Emission of the Terrestrial Exoplanet GJ 1132b2024, Qiao Xue, Jacob L. Bean et al. |
Results consistent with no significant atmosphere |
HCN: No detection
|
JWST-NIRSpec | Double Trouble: Two Transits of the Super-Earth GJ 1132 b Observed with JWST NIRSpec G395H2023, E. M. May, Ryan J. MacDonald et al. |
Inconsistent results among the two transits observed |
HCN: Detection CH4: Upper limit
|
HST WFC3 | Detection of an Atmosphere on a Rocky Exoplanet2021, Swain, Mark R., Estrela, Raissa et al. |
|
HCN: No detection
|
HST WFC3 | ARES V: No Evidence For Molecular Absorption in the HST WFC3 Spectrum of GJ 1132 b2021, Lorenzo V. Mugnai, Darius Modirrousta-Galian et al. |
independent analysis does not confirm claimed HCN from Swain et al. 2021 |
H: Upper limit
|
HST STIS | Lyα in the GJ 1132 System: Stellar Emission and Planetary Atmospheric Evolution2019, Waalkes, William C., Berta-Thompson, Zachory et al. |
The Ly-alpha line variability is consistent with a stellar origin |
|
G-B: Low resolution visible | Ground-based Optical Transmission Spectroscopy of the Small, Rocky Exoplanet GJ 1132b2018, Diamond-Lowe, Hannah, Berta-Thompson, Zachory et al. |
No clear, low mean molecular weight atmosphere |